The role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.

Exogenous attention can be understood as an adaptive tool that permits the detection and processing of biologically salient events even when the individual is engaged in a resource-consuming task. Indirect data suggest that the spatial frequency of stimulation may be a crucial element in this proces...

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Autores principales:	Luis Carretié, Marcos Ríos, José A Periáñez, Dominique Kessel, Juan Alvarez-Linera
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b6f8fb56fef94e958f411e952f69ba91
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spelling	oai:doaj.org-article:b6f8fb56fef94e958f411e952f69ba912021-11-18T07:19:08ZThe role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.1932-620310.1371/journal.pone.0037082https://doaj.org/article/b6f8fb56fef94e958f411e952f69ba912012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22590649/?tool=EBIhttps://doaj.org/toc/1932-6203Exogenous attention can be understood as an adaptive tool that permits the detection and processing of biologically salient events even when the individual is engaged in a resource-consuming task. Indirect data suggest that the spatial frequency of stimulation may be a crucial element in this process. Behavioral and neural data (both functional and structural) were analyzed for 36 participants engaged in a digit categorization task in which distracters were presented. Distracters were biologically salient or anodyne images, and had three spatial frequency formats: intact, low spatial frequencies only, and high spatial frequencies only. Behavior confirmed enhanced exogenous attention to biologically salient distracters. The activity in the right and left intraparietal sulci and the right middle frontal gyrus was associated with this behavioral pattern and was greater in response to salient than to neutral distracters, the three areas presenting strong correlations to each other. Importantly, the enhanced response of this network to biologically salient distracters with respect to neutral distracters relied on low spatial frequencies to a significantly greater extent than on high spatial frequencies. Structural analyses suggested the involvement of internal capsule, superior longitudinal fasciculus and corpus callosum in this network. Results confirm that exogenous attention is preferentially captured by biologically salient information, and suggest that the architecture and function underlying this process are low spatial frequency-biased.Luis CarretiéMarcos RíosJosé A PeriáñezDominique KesselJuan Alvarez-LineraPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 5, p e37082 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Luis Carretié Marcos Ríos José A Periáñez Dominique Kessel Juan Alvarez-Linera The role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.
description	Exogenous attention can be understood as an adaptive tool that permits the detection and processing of biologically salient events even when the individual is engaged in a resource-consuming task. Indirect data suggest that the spatial frequency of stimulation may be a crucial element in this process. Behavioral and neural data (both functional and structural) were analyzed for 36 participants engaged in a digit categorization task in which distracters were presented. Distracters were biologically salient or anodyne images, and had three spatial frequency formats: intact, low spatial frequencies only, and high spatial frequencies only. Behavior confirmed enhanced exogenous attention to biologically salient distracters. The activity in the right and left intraparietal sulci and the right middle frontal gyrus was associated with this behavioral pattern and was greater in response to salient than to neutral distracters, the three areas presenting strong correlations to each other. Importantly, the enhanced response of this network to biologically salient distracters with respect to neutral distracters relied on low spatial frequencies to a significantly greater extent than on high spatial frequencies. Structural analyses suggested the involvement of internal capsule, superior longitudinal fasciculus and corpus callosum in this network. Results confirm that exogenous attention is preferentially captured by biologically salient information, and suggest that the architecture and function underlying this process are low spatial frequency-biased.
format	article
author	Luis Carretié Marcos Ríos José A Periáñez Dominique Kessel Juan Alvarez-Linera
author_facet	Luis Carretié Marcos Ríos José A Periáñez Dominique Kessel Juan Alvarez-Linera
author_sort	Luis Carretié
title	The role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.
title_short	The role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.
title_full	The role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.
title_fullStr	The role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.
title_full_unstemmed	The role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.
title_sort	role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/b6f8fb56fef94e958f411e952f69ba91
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The role of low and high spatial frequencies in exogenous attention to biologically salient stimuli.

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